Shojiro Sawada

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Sakai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gunning refractories
- Patent number 4,261,752
- Issue date Apr 14, 1981
- Shinagawa Refractories Co., Ltd.
- Hiroyuki Danjyo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL